Gasket



B. J. VICTOR Feb. 14, 1933.

GASKET Filed July 25 Patented Feb. 14, 1933 UNITED STATES PATENT OFFICE BENJAMIN VICTOR, F OAK PABX, IILINOIS, ASSIGNOR TO VICTOR IANUI'AUIUBING di GASKET COMPANY, OF CHICAGO, ILLINOIS, A

CORPORATION 0F ILLINOIS @asm Application illed July 28,

This invention relates generally to the art rial of which gaskets can be made, and to the method of making this material in sheet form.

on opposite Gaskets are made-in a great variety of sizes shapes and models and while the materlal ol this invention may be used alone for making gaskets of some kinds for some purposes 1t can also be used in an assembly for making gaskets of other kinds or for other purposes, and therefore I refer to the material generally as a gasket material for making any k1nd of gasket for which it is or may be adapted.

The primary object of the invention 1s to provide a gasket material of novel construction having sufficient stability to maintain 1t in proper cond-ition for use and which ca n be manufactured economically in diierent klnds of gaskets and in varieties of sizes and shapes.

Another object is to provide gasket material in sheet form having a metal core .faced on both sides with layers of heat-reslsting material, such as asbestos or asbestos composition, which is mechanically secured to the core by means of flexible prongs bent 1n the operation of making the material to anchor the asbestos layers to thecore.

Another object is to rovide a novel method for` making the 'gas etmaterial in sheet form in a simple, rapid and economical roll operation.

AIn the accompanying drawing I A have illustrated the invention and the method of manufacture in a simple embodiment and referring thereto, p

Fig. 1 shows the two sets of rolls in section and the gasket material being made therein.

Figs. 2 and 3 are sectional views on the lines 2 2 and 3 3 of Fig. 1 respectively.

Fig. 4 is a detail lan view showing a section of core partly aced with layers of heatresisting material.

Fig. 5 is a detail sectional view on the line 5 5 of Fig. 4. i

The gasket material comprises a metal core 1 having a plurality of prongs 2 struck up sides thereof leaving openings j{lwreferred construction of core, as

ig. 4, the prongs are arranged 3. In the shown in of one row of the other row. The openings formed by4 1930. Serial N 0. 470,057.

in pairs of rows with the rongs of one row projecting on one side'ofp the core and the prongs o the other row projecting on the other side of the core and with the prongs in staggered relation to the prongs one of the rows of prongs are arran ed in overlapped relation with the openings ormed by the other row of the pair of rows of prongs and the openmgs in one row are directed oppositely with respect to the openings in the other row. The prongs may be located as close together as desired but I have indicated a disposition of the prongs which is satisfactory for the purpose and which provides a core having the requisite stability and stiness in sheet material and in the gaskets made therefrom. The core may be made of steel or any other metal or material suitable for the pur ose and in any gage found to be desirable fldr material for different uses. The heat-resisting material 4 preferably consists of asbestos or asbestos composition and it is conveniently provided in the form of mill-board which is preferably softened b moistening; but heat-resisting material o any kind may be used and it may be applied to the core as it is manufactured and while still soft enough to embed the prongs. In the manufacture of the gasket material the core and oppositely arranged layers of the heat-resisting material 4 are passed between rolls 5 having soft facings 6, Fig. l, which force thev layers upon the prongs and flatly against the body of the core. The prongs are of suflicient size to project through the layers and the points of of heat-resisting material may be made of any thickness to meetvthe requirements for the manufacture of gaskets; and the prongsA may be made in any number and arrangement and form to perform the functions of this invention in the manner herein set forth. It is important that the prongs should be points 8 of t clenched in the heat-resisting layers and theyr must be long enough for this pur ose, but 1t is not necessary that they shoul enter the soft facings of the rolls 5 or that they should project to any material extent through the outer surfaces ofthe layers so long as it is possible in the succeeding o eration to clench the prongs inthe layers. rom the rolls u,5 the work passes to hard faced rolls 7 which bend the rongs in the same general direction and cl)ench the points thereof in the layers to anchor the layers on the core in a secure and uniform manner. The layers are desirably compressible and the rolls 7 com-. press these layers and embed the points 8 of the prongs in the layers. After the work leaves the rolls 7 the compressed sheet material will eX and slightly without lifting the he prongs and the result is that in the finished sheet these points are depressed below the outer surfaces of the layers, or at least they will not project above the surfaces, and `these surfaces are smooth and free from projections which might interfere with shipping, handling and using the gasket mate' rial or the gaskets. When'the core is made the prongs project outward substantially at right angles to the body of the core and this facilitates engaging the heat-resisting layers thereto because the prongs will readily pierce the layers and the points of the prongs will enter the soft -facings on the rolls 5. The points of the prongs are bent over by the rolls 7 and at the same .time the prongs are bent bodily to a more or less inclined position relative to the body of the core as indicated in Fig. 5, which clenches the prongs in the layers of heat-resisting material and secures the layers immovably upon the core. The heat-resisting layers are secured uniformly on the sides of the core to provide gasket sheet material of substantially uniform thickness throughout with' smoothsurfaces. The points of the, prongs may or may not show on the surfaces of the gasket sheet material, depending upon the size of the prongs, the thickness of the heat-resisting layers or other conditions, but'whether they do or not is not important as long as they do not project and interrupt thesmooth surfaces of the gasket or prevent the gasket from compressing when the joint to which it is applied is tightened. In the manufacture of the gasket sheet material, especially in production work, the prongs may not be bent exactly as shown -in the drawing and the prongsl may be bent layers in any manner suitable for securing the layers to the core.

v The sheet material may be used for other purposes than gaskets and it may be necessary or desirable to change the form, construction and arrangement of parts to ada t the invention to gaskets and other artic es as now or hereafter made and I reserve the right to make all such chan es as fall within the scope of the following c aim:

I claimz' The herein described method of makin sheet material for use in the manufacture o gaskets and the like which consists in pro- Vidin sheets of gasket material and a metal core aving prongs projecting outwardly from both sides thereof, arranging the core between two sheets of gasket material and pressing the sheets upon the core to arrange the sheets and core in parallel and contacty ing relation by passing the sheets and core between a pair of soft faced rolls, and in then bending the prongs bodily to clench them 'in the sheets with their 4points below the outer vsurfaces of the sheets by assing the sheets and core between a pair of) hard faced rolls.v

` BENJAMIN J. VICTOR.

differently in a single sheet, ,depending upon many different conditions, but it is not material to my invention so far as I have yet discovered that the prongs should be bent exactly as shown in the drawing, and although I find this to be a desirable construction I believe ityvill be suicient that the prongs are clenched upon the heat-resisting 

